Set fixed screen resolution for application in Wine

For example, I've application (game) that has only 640x480 resolution. Now I've 2 options: launch it in window-mode, and will has 640x480 size or enable fullscreen and will fill all screen. What I want is to resize application without going fullscreen (e.g. to 1024x768). As for now I've tried 2 solutions: 1. Enable 'Emulate a virtual desktop' in winecfg. At first it will launch desktop with that resolution, but when I enable fullscreen in application it will shrink that desktop to 640x480. 2. Start Wine in inner X-server: Xephyr -ac -br -noreset -screen 1024x768 :1.0 & ZEPHYR_PID=$! sleep 1 DISPLAY=:1.0 wine game.exe kill $ZEPHYR_PID Same problem here, it will resize window when I enable fullscreen.